include/wx/zstream.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        zstream.h
   3 // Purpose:     Memory stream classes
   4 // Author:      Guilhem Lavaux
   5 // Modified by:
   6 // Created:     11/07/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Guilhem Lavaux
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11 #ifndef __WXZSTREAM_H__
  12 #define __WXZSTREAM_H__
  13
  14 #ifdef __GNUG__
  15 #pragma interface
  16 #endif
  17
  18 #include <wx/stream.h>
  19 #include "zlib.h"
  20
  21 class wxZlibInputStream: public wxFilterInputStream {
  22   DECLARE_CLASS(wxZlibInputStream)
  23  public:
  24   wxZlibInputStream(wxInputStream& stream);
  25   virtual ~wxZlibInputStream();
  26
  27   wxInputStream& Read(void *buffer, size_t size);
  28   off_t SeekI(off_t pos, wxSeekMode mode = wxFromStart);
  29   off_t TellI() const;
  30
  31   size_t LastRead() const { return m_lastread; }
  32   bool Eof() const;
  33
  34  protected:
  35   size_t m_lastread;
  36   size_t m_z_size;
  37   unsigned char *m_z_buffer;
  38   bool m_eof;
  39   struct z_stream_s m_inflate;
  40 };
  41
  42 class wxZlibOutputStream: public wxFilterOutputStream {
  43   DECLARE_CLASS(wxZlibOutputStream)
  44  public:
  45   wxZlibOutputStream(wxOutputStream& stream);
  46   virtual ~wxZlibOutputStream();
  47
  48   wxOutputStream& Write(const void *buffer, size_t size);
  49   off_t SeekO(off_t pos, wxSeekMode mode = wxFromStart);
  50   off_t TellO() const;
  51
  52   size_t LastWrite() const { return m_lastwrite; }
  53   bool Bad() const;
  54
  55  protected:
  56   size_t m_lastwrite;
  57   size_t m_z_size;
  58   unsigned char *m_z_buffer;
  59   bool m_bad;
  60   struct z_stream_s m_deflate;
  61 };
  62
  63 #endif